Which mountain range was once the tallest in the world? A. Appalachian Mountains
B. Rocky Mountains

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Which factor is likely to impact the possible number of compounds ?

Which activity is an innate behavior